"What is Sound?" That is the question that The Alan Alda Center for Communicating Science at Stony Brook University is challenging scientists to answer in video or written form for the Flame Challenge 2016.

The Flame Challenge is an international competition where scientists answer the question in a way that is most appropriate for 11-year-olds. Entries will be judged by thousands of 5th and 6th grade schoolchildren around the world.